Translation of the original operating manual
Drive units for flexible shafts
- 22 -
GB
MB 30 E
Release screw (1) and remove housing cover.
Fig. 16
Releasing the housing cover
Pull the brush carrier (2) out of the housing.
Release the cable connector (3) from the
connection.
Replacing the carbon brush (4). Slide the new
carbon brush into the brush carrier.
Fig. 17
Carbon brush replacement MB 30 E
Place the cable connector (3) onto the
connection.
Replace the brush carrier (2) in the housing.
Screw the cover back on the housing and repeat
the procedure on the other side of the housing.
After replacing the carbon brush, allow
the drive unit to run in, up to 60
minutes. In a loaded case the running-
in time can be reduced.
During the running-in time, you may
have slight fluctuation of the speed.
Whenever the carbon is changed, the
collector
must
be
cleaned
with
compressed air.
After the third change of the carbon
brushes, at the latest, it is necessary to
grind the collector.
Contact our head office directly.
Other maintenance
Before starting work, check the drive unit, handpiece,
flexible shaft and tool for visible damage.
Please replace worn tools immediately, otherwise there is
a risk of injury.
Check the spindles, threads and
clamping devices regularly for wear
and for compliance with the tolerances!
If defects are detected, return the unit to our head office or
one of our authorised service centres for repair.
Protect the unit, particularly the drive and operating
elements, from dust and dirt.
Clean the air slits. The maintenance must be carried out at
least once a year. On the MB 20/2 and MB 30 E at the
latest after wear and replacement of the carbon brushes.
Use compressed air to do the cleaning.
Repairs
Repairs may only be carried out by
specialist personnel. Our Service
department is available to you for this.
Only use original spare parts!
In the case of deteriorating performance, the unit must be
disassembled and cleaned. Contact your nearest
authorised service centre or our head office directly. We
can send the appropriate spare parts lists to the specialist
service centres. Please contact our Sales department in
respect of this.
Scope of Delivery
MB 20/2, MB 20/3 and MB 30 E
220-230V universal motor with motor holder
Cable with connectors
The MB 20/2 and MB 30 E kit also includes:
Flexible Shaft
Collet handpiece
Special accessories for MB 30 E:
Bench stand and moveable stand